Improvement in stone-dressing machines



2 SheetsSheet 1.

J. OOULTER &' H. HARPIN.

STONE DRESSING MACHINE.

No. 98.850. Patented Jan. 18, 1am,

2 Sheets-Sheet 2.

J. GOU'LTER & H, HARPIN. STONE DRESSING MACHINE No. 98,850. Patented.Jzin. 1a, 1870.

\ count Letters Patent Zio.98,850, dated Jaunc zry I8, 1810 IMPRQVEMENTIN STONE DRESSINGtJ-VIACHINES.

The Schedule referred toin these Letters Patent; and making part of thesame,

t given to the table.

carrying loosely other stones to be dressed; in the combination, with aflangedreciprocating frame, of

guide-pulleys, for supporting and guiding the same;

andin the mechanism whereby the reciprocating frame may be verticallyadjusted. Flags or stones to be dressed or scoured, are fixed upon theface-plate'by means of portable dogs, stops, or blocks, temporarilyfixed in holes provided in the face-plate for that purpose, with woodenwed gcs driven in betwixt; and other flags or stones to be faced, areplaced within the reciprocating frame, resting upon the stones fixed onthe face-plate. \Vhen motion is given to the apparatus, the flags in onepart will ruh those in the other part, sand and waterbeing suppliedthereto, as usual in scouring flags by hand. The reciprocatin g framemay be provided with upright guides, for holding flags or stones onedge, in proper position for sguaringthem.

,This invention is illustrated by the drawings, in which- Figure 1 is avertical longitudinal section of an apparatus constructed according toour invention, and

Figure 2 is a plan of the same. A is the face-plate or table, mounted ona spindle, B, and supported in bearings O and Q, fixed on suitableflame-work. U

On this spindle B is fixed a bevel-wheel, D, gearing into auotlt'erbevel-wheel, mounted on'the dl ivin'gshaft E. The latter-mentionedbevel-wheel is driven by l a. fixed key or teathertlierein; and, bymeans of the driving-pulleys F and 1 on the said shaft, motion is Thissaid bevel-wheel is capable of being moved into and out of gear by meansof a friction-box worked by hand-wheel G, screw and rod G, and lever G.H' is the reciprocating frame, which is supported upon four friction orcarrying-rollers, I, and 'is 'maintained in lateral positionzhy otherfour diction-roll:- ers J, which act-against four guide-plates K, fixedon the frame H. It is also prevented. from vertical displacementby'the-flanges of the frame, which proect slightly beneath the rollersJ, which thus hold it accom pan yin g and we 'do hereby declare that thefollowand assist in thegtinding thereof down. These rollers arecarriedon studs fixed in brackets L, which brackets'are capable ofbeing raisedand lowered, or moved up and down on the hollow pillars M, (to regulatethe heightof the frame according to the thickness of the stone underOperation) by means of screws N, which are'turned or operated by Therelativespeeds of the table and frame'areso anranged as to becontinually changing the points of contact of the stones operated upon.

I 'l are flags or stones, placed on the table (in a rough state) to befaced, andwhich are fixed thereon by means of wedges U, driven inbetwixt dogs or stops U, which fitinto holes provided in the table. forthat purpose. v

V are other flags or stones, (also in their rough state,) placed loose]ywithin the reciprocating frame H, and resting upon-the stones '1; i

It, will be readily seen, that when rotary motion is given to the table,and reciprocating motion to the frame, the surfaces of the stones in theframe, which are in contact wit-lfthe surfaces of the stones iiited onthe table, will rub orgrin'd each other. ater and sand (which are Lobesupplied to the tops) will'pass betwixt. the stones in the frame to thesnrlhces in contact,

as usual in facing or scouring flags or stones by hand.

' By menus'ot' this invention, flags and stones may be taken, in theirnatural rough state, and rubbed'or ground to a perfectly true oreveiiand smooth surface, without; the previous nsefof any sort of chiselor other cnt ting-tool or instrument. I

Figure 3, sheet 2, is an elevation, and

Figure 4 is a plan of a table with reciprocating frame,-

having upright guides and frame-work thereon, for holding tings orstones on the edge to he edged, and also to be squared.

Figure 5 shows a top view, on a larger scale, of a port-ion of theframe-work with a stone therein.

A are the uprightguides or stands, which are fired to cross-bars 1) onthe reciprocating frame,and; in

which guides are formed vertical grcoves a. The framework B -is formedwith ribs b, to iii; and slide in' the aforesaid grooves.

Flags to be edged or squared, are fixed,'by means of wood wedges o, inthese frames, and the frames are then placedin the groovesoi' the guidesor stands, (in

which they are-tree to slide up or down, with the" bottom edges of thesaid flags resting upon the flags or stones which are fixed on therotary table,

When the machine is set in motion, the flags are, edged or rnbbed, andmade straight on the hot-tom- -edges; they are then turned in theframes, witli the straightened edgc'fitted and wedged up to one of theupright sides of the frame, by which means they are set square or atright angles to the surface of the table, with other rough edges towardand in contact with the stones fixed on the table, which, on the machinebeing again set in 'motion, will be rubbed or ground and straightened,in like manner as the former edges,'and'will also be squared or rubbedto straight edges atriglit angles to. the former straightened edges;

ribs; conseqnentlythe edges or sides-toward the ta ble will lie-ribbedsquare with the former edges or sides,"jand so on to any or all theren'iaiuing-edges or sides}.

Fignre 8 is a longitudinal and vertical section of a portable apparatus.for scouring flags, being the same in principle as that shown in fig 1and 2, but of a' modified construction and mode of operation.

The table A is formed with a rim or flange on the under. side, so as tobe supported on friction-rollers B,

seem

ing a bevel-wheel, in which a bevel-pinion, 0, gears, and which ismounted on the driving-shaft D, giving rotary motion to the table.

v A worm, E, is also keyed on the driving-shaft, which gears in a worm,F, having a stud, f, to which a connecting-rod, G, is attached, and bywhich motion is given to the reciprocating frame.-

Shaits H and I,'e'ach connect and are supported by two 1 brackets, H and'1', and have piuions J and J" at each end, gearing into racks K and K,formed or fixed onthe pillars L and L.

A-worm, M, gears in a wheel keyed onv each shaft H and I. By the turningof the handle N, the said brackets can be. raised and lowered asrequired.

In a machine for dressing stone, the combination" of ing skeletoncarriage orframe located above it, and adapted-tor earrying looselyother stones to be dressed.,,

Also, the combination of the flanged reciprocating frame, with theguide-pulleys, in the manner shown and described. i

Also, the combination, with the hollow-pillars M, of the separatelyadjustable screwsN and sliding brackets L, as and for the purposedescribed.

' JAMES OOULTER.

HERBERT HARPIN.

Witnesses: I I v WILLM. HAIGH,

WM. Tas'xsn,

' Patent Agent, .Halifax and Bradford.

and teeth or cogs are also provided underneath, forma rotarywork-supporting face-plate, with areciprocat

